31661655045070 has 16 divisors (see below), whose sum is σ = 57003376592448. Its totient is φ = 12661907015520.

The previous prime is 31661655044993. The next prime is 31661655045101. The reversal of 31661655045070 is 7054055616613.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344327046 + ... + 344418985.

It is an arithmetic number, because the mean of its divisors is an integer number (3562711037028).

Almost surely, 2^{31661655045070} is an apocalyptic number.

31661655045070 is a deficient number, since it is larger than the sum of its proper divisors (25341721547378).

31661655045070 is a wasteful number, since it uses less digits than its factorization.

31661655045070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688750635.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 31661655045070 in words is "thirty-one trillion, six hundred sixty-one billion, six hundred fifty-five million, forty-five thousand, seventy".